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Thomas Edison ; 1889
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| Number | Title | Issue Date |
| 5829537 | Clay court scarifier A clay surface scarifier includes a portable frame with a first axle and a second axle rotationally connected thereto. At least one scarifying blade, having a cutting edge orthogonal to the first axis, is attached to the first axle and rotatable therewith... | 11/03/1998 |
| 5505268 | Bidirectional field implement An implement for preparing a field includes a ground engaging device that allows the implement to be pushed or pulled on the field. The ground engaging device includes a reversible roller with projections joined to an outer surface thereof to engage the g... | 04/09/1996 |
| 5097908 | Farm machine for working the soil The farm machine 1 for working the soil comprises tools 21 each of which consists of a concave disk 47 provided with a plurality of spades 48 at its periphery. The concavity of the concave disk 47 is directed toward the forward end 12 of the rotor 16, con... | 03/24/1992 |
| 5082063 | Mixing head for soil tillage The mixing head comprises a pair of opposed, spaced apart, generally vertical discs that are generally aligned with the direction of travel, although they are slightly angled so as to be wider apart at their front ends than at their rear ends. The discs a... | 01/21/1992 |
| 5078216 | Combination tillage apparatus A combination tillage apparatus for towing behind a tractor comprises an extended frame having a trunk member oriented along the direction of travel of the apparatus and at least one pair of parallel and spaced apart branch members oriented perpendicularl... | 01/07/1992 |
| 5070946 | Stone burying attachment for landscape machines A stone burying attachment for a finish grading landscape machine is disclosed wherein the attachment is optionally mounted to the frame of the machine to create a furrow immediately forwardly of the discharge side of the machine to permit a burying of st... | 12/10/1991 |
| 5046346 | Agricultural machine The invention relates to an agricultural machine for soil-cultivation, comprising, in the direction (F) of travel of the machine, a first row of cutting wheels arranged at right-angles to the said direction of travel and having substantially horizontal ax... | 09/10/1991 |
| 4987959 | Farm machine for working the soil The farm machine 1 for working the soil comprises tools 21 each of which consists of a concave disk 47 provided with a plurality of spades 48 at its periphery. The concavity of the concave disk 47 is directed toward the forward end 12 of the rotor 16, con... | 01/29/1991 |
| 4838359 | Soil working machine having a rotor driven around an oblique axis The farm machine includes a frame 9, a hitching structure 4, a rotor 16 supported by the frame 9, and spades 21 mounted on the rotor 16. The active parts of the spades 21 are curved. The curvature of all of the spades 21 is directed in the same direction ... | 06/13/1989 |
| 4564073 | Plow or harrow An improvement of a plow or a harrow of the type in which a plurality of saucer-like disks carried by a rotary shaft inclined at an angle with respect to the direction of travel of a tractor are forced to rotate, thereby plowing uncultivated farm land. Th... | 01/14/1986 |
| 4416335 | Ground-clearing and mound-building scarifier A ground-clearing and mound-building device is provided that can be towed along the ground to move material on the surface to one side, expose the surface of the ground, and build mounds on the cleared ground for planting and forest regeneration, having a... | 11/22/1983 |
| 4353421 | Soil preparing device for preparing forest soil A soil preparing device for preparing forest soil to a planting bed. The device comprises a frame intended to be mounted on a forest tractor, a support arm mounted on the frame pivotally around a horizontal link, and a preparing element supported by a sli... | 10/12/1982 |
| 4284146 | Soil working machine A soil working machine pivotably mounts at least one rotor having serrated working elements. The rotor is pivotally connected at each end to a frame beam by a pin which can be inserted into either one of two holes located one above the other. The hole cho... | 08/18/1981 |